203640644002247 has 2 divisors, whose sum is σ = 203640644002248. Its totient is φ = 203640644002246.

The previous prime is 203640644002223. The next prime is 203640644002273. The reversal of 203640644002247 is 742200446046302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203640644002247 - 2¹⁶ = 203640643936711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203640644002198 and 203640644002207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203640644002847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101820322001123 + 101820322001124.

It is an arithmetic number, because the mean of its divisors is an integer number (101820322001124).

Almost surely, 2^{203640644002247} is an apocalyptic number.

203640644002247 is a deficient number, since it is larger than the sum of its proper divisors (1).

203640644002247 is an equidigital number, since it uses as much as digits as its factorization.

203640644002247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 44.

The spelling of 203640644002247 in words is "two hundred three trillion, six hundred forty billion, six hundred forty-four million, two thousand, two hundred forty-seven".